Which mosque in Edirne is considered Mimar Sinan's masterpiece?

The Selimiye Mosque in Edirne is widely considered Mimar Sinan’s masterpiece and the culmination of classical Ottoman architecture.

Commissioned by Sultan Selim II, the mosque was built between 1568 and 1574 or 1575. Selim chose Edirne, a former Ottoman capital and major Balkan city, rather than Istanbul. He died in 1574, before the complex was fully completed.

The prayer hall is dominated by a single immense dome supported by an octagonal system of eight major piers. Its interior design creates an unusually open, unified space, while four tall minarets frame the central structure. The dome’s diameter is about 31.28 meters, close to that of Hagia Sophia’s famous dome.

The alternatives are also major Ottoman mosques but belong to different architects or stages of Sinan’s career. The Şehzade Mosque is associated with his apprenticeship, the Süleymaniye with his mature period, and the Selimiye with what Sinan regarded as his master stage.